Package com.franz.agraph.repository

Class AGBooleanQuery

java.lang.Object

org.eclipse.rdf4j.query.impl.AbstractOperation

org.eclipse.rdf4j.query.impl.AbstractQuery

com.franz.agraph.repository.AGQuery

com.franz.agraph.repository.AGBooleanQuery

All Implemented Interfaces:

BooleanQuery, Operation, Query

public class AGBooleanQuery
extends AGQuery
implements BooleanQuery

Implements the Sesame BooleanQuery interface for AllegroGraph.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.rdf4j.query.Query

Query.QueryType

Field Summary

Fields inherited from class com.franz.agraph.repository.AGQuery

RDFS_PLUS_PLUS, RESTRICTION, SPARQL_COVERAGE_PLANNER, SPARQL_IDENTITY_PLANNER

Constructor Summary

Constructors

Constructor	Description
AGBooleanQuery(AGRepositoryConnection con, QueryLanguage ql, String queryString, String baseURI)	Creates an AGBooleanQuery instance for a given connection.

Method Summary

Modifier and Type	Method	Description
void	download(File file, BooleanQueryResultFormat format)	Evaluates the query and saves the results to a file.
void	download(String file, BooleanQueryResultFormat format)	Evaluates the query and saves the results to a file.
boolean	evaluate()	Evaluates the query and returns a boolean result.
InputStream	stream(BooleanQueryResultFormat format)	Evaluates the query and returns the result as an input stream.

Methods inherited from class com.franz.agraph.repository.AGQuery

analyze, download, download, download, download, getBaseURI, getBindingsArray, getEngine, getEntailmentRegime, getFranzOptionPrefixString, getLanguage, getLimit, getName, getOffset, getPlanner, getQueryString, hashCode, isCheckVariables, isLoggingEnabled, isPrepared, setCheckVariables, setEngine, setEntailmentRegime, setIncludeInferred, setLimit, setLoggingEnabled, setOffset, setPlanner, setPrepared, setSaveName, stream, stream, toString

Methods inherited from class org.eclipse.rdf4j.query.impl.AbstractQuery

getMaxQueryTime, setMaxQueryTime

Methods inherited from class org.eclipse.rdf4j.query.impl.AbstractOperation

clearBindings, getBindings, getDataset, getIncludeInferred, getMaxExecutionTime, removeBinding, setBinding, setDataset, setMaxExecutionTime

Methods inherited from class java.lang.Object

equals, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.query.Operation

clearBindings, getBindings, getDataset, getIncludeInferred, getMaxExecutionTime, removeBinding, setBinding, setDataset, setIncludeInferred, setMaxExecutionTime

Methods inherited from interface org.eclipse.rdf4j.query.Query

explain, getMaxQueryTime, setMaxQueryTime

Constructor Details

AGBooleanQuery

public AGBooleanQuery(AGRepositoryConnection con,
 QueryLanguage ql,
 String queryString,
 String baseURI)

Creates an AGBooleanQuery instance for a given connection.

Parameters:

con - the connection

ql - the query language

queryString - the query

baseURI - the base URI for the query

Method Details

evaluate

public boolean evaluate()
                 throws QueryEvaluationException

Evaluates the query and returns a boolean result.

Specified by:

evaluate in interface BooleanQuery

Throws:

QueryEvaluationException

download

public void download(File file,
 BooleanQueryResultFormat format)
              throws QueryEvaluationException

Evaluates the query and saves the results to a file.

Parameters:

file - Output path.

format - Output format.

Throws:

QueryEvaluationException - if there is an error while evaluating query

download

public void download(String file,
 BooleanQueryResultFormat format)
              throws QueryEvaluationException

Evaluates the query and saves the results to a file.

Parameters:

file - Output path.

format - Output format.

Throws:

QueryEvaluationException - if there is an error while evaluating query

stream

public InputStream stream(BooleanQueryResultFormat format)
                   throws QueryEvaluationException

Evaluates the query and returns the result as an input stream.

Note that it is important to close the returned stream, to avoid resource leaks.

Parameters:

format - Output format.

Returns:

An input stream containing response data. The caller MUST close this stream to release connection resources.

Throws:

QueryEvaluationException - if there is an error while evaluating query